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Suspension & Braking Forum by BimmerWorld
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Old 09-11-2014, 04:11 PM   #1
e46_pt
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Angry Just another steering problem, P/S Pump?

Hi people, I'm having some problems with my e46.

My steering feels loose, has a lot of play on the steering wheel.

FCABs replaced for powerflex.

Alignment seems ok.

Tyre pressure at 2.5bars.

Ok, I think I've narrow down the suspects. The usual stuff, tie rods, control arms, fcabs, top mount doesnt have play.

I believe the problem is, or the steering rack or steering pump. It doesnt self center very well, and has a lot of bump steer, it has a hard time to bring it to the center, feels very loose.

If the car is pulled up, no tyres on the floor and the steering is locked, if i try to turn the wheel with my hands, it pulls a bit, from the steering rack, because I see only movement by the tie rod axle joint (which it was already changed).

What happens too is, if the car is also on jacks, no tyres on the floor, i can easily turn lock to lock with my hands, very easily.

What makes me think that isnt the rack is, with a little touch on the steering wheel, I can see movement on the tyres, so it seems there isnt any looseness.

Already change sterring fluid.

Should I go for steering pump?

Thanks
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Old 09-13-2014, 04:50 AM   #2
e46_pt
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any help?
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Old 09-13-2014, 12:44 PM   #3
Dave1027
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First thing to check for looseness/play is the steering column guibo. Bump steer is probably alignment and maybe rack. Make sure the rack is tight to the subframe. Not centering could also be alignment and maybe rack. I don't see how any of this could be the fault of the pump.
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Old 09-13-2014, 12:53 PM   #4
e46_pt
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Quote:
Originally Posted by Dave1027 View Post
First thing to check for looseness/play is the steering column guibo. Bump steer is probably alignment and maybe rack. Make sure the rack is tight to the subframe. Not centering could also be alignment and maybe rack. I don't see how any of this could be the fault of the pump.
Thanks for your reply.

Guibo already changed.

Align altrady tried toe in, toe zero and toe out.

Rack is tight to the frame

Next week I'm going to replace my top strut mounts.

I've read that the power steering pump tries to center the steering.

I'm going to try to make a video so you can see my test.

If I make a 3-9 pull to the wheel, with the steering wheel lock, I first get the little lock-to-lock that it usualy gives and them I can bring it a bit more, without the steering wheel actualy move. Its not getting easy.
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Old 09-26-2014, 03:56 AM   #5
e46_pt
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I made up my mind and I'm going to change the steering rack.

At the moment I believe mine is 32136753438. Would you sugest to go for another one?

Is there a stiffer steering rack I can install on my nov 99 320d e46?

Are all interchangeable?
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Old 09-27-2014, 11:39 AM   #6
Dave1027
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Quote:
Originally Posted by e46_pt View Post
Align altrady tried toe in, toe zero and toe out.
Not following this part. Post your alignment numbers.

Last edited by Dave1027; 10-02-2014 at 12:11 PM.
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Old 10-05-2014, 10:04 AM   #7
e46_pt
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Originally Posted by Dave1027 View Post
Not following this part. Post your alignment numbers.
Alreeady tried front toe-in, zero and toe out, and still the same.
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Old 10-12-2014, 08:46 PM   #8
wallofgrath
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Depends which steering rack you have... there are a number of good threads about racks.. My 330ci came with the crappy TRW steering rack, and I upgraded it to the '02+ version and it is sooo much better. I got a used one and it was plug and play. It made more of an effect than FCAB's, struts, strut mounts, steering guibo, alignment... all of which I did first. Also consider your tires -- are they cheap and old?

Last edited by wallofgrath; 10-12-2014 at 08:48 PM.
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